Forge Mods for Minecraft 1.21
Browse 5,334 free Forge mods for Minecraft 1.21 — popular picks include JEAsync, One Enough Block, Cobblemon Alatia's Fakemon Pack.
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JEAsync
An async version of JEI that loads faster
One Enough Block
Easily specify replacing one block with another.
Cobblemon Alatia's Fakemon Pack
Cobblemon addon that adds fakemon from the Alatia Region
Vampirism.co
Welcome to the SMP where vampires, werewolves, hunters, and humans build their own destinies in an ever-changing world made for your stories and adventures.
Playing Cards & Chips
Adds card decks, poker chips & casino decor!
Decorative Wooden Lattices
Lattices to decorate your buildings
Reworked Phantoms
No more insomnia triggers, phantoms are now only rebalanced full moon threats!
Animal Garden - Fennec Fox
This mod adds the Fennec Fox as a mob to your world.
Sn4pe's Wishing Wells
Experience the magic of customizable wishing wells with random blessings and curses in Minecraft.
Horror Faces
Analog faces that stalk and hunt you down
Create: Northstar - Redux
Space exploration addon for Create.

Nice Mobs Remastered
Randomised mob equipment, 10 new mobs, 3 new bosses, a new late game dimension and more
CBC Military Supplement
This is an addon of Create Big Cannons with additional projectile and new torpedo tube and torpedos
Just-In NETHER
Enhance the NETHER adventure experience ,and the addition of entirely new species.
Nenu's Pop Plushies
Adds +100 diverse pop culture characters as plushies, such as Godzilla, Saitama, Bluey and much more!
Animal Garden - Sugar Glider
This mod adds the Sugar Glider as a mob into your world.
Custom Item Despawn Duration
Configure how long items will last before despawning
Integrated Mekanism
Compatabiliity mod between Mekanism and the Integrated Dynamics mods

Better Lush Caves
Some much-needed upgrades for the lush cave biome, and some changes to moss.
True Shot Enchantment (Fabric/Forge/NeoForge/Quilt)
New enchantment for bows makes arrow ignore gravity!
fapdos' Nether Mobs: Recrafted
Adds several different mobs and items to the Nether
ZS Pack (Tensura)
Experience the world of Slime and try to become as strong as Rimuru! (Modpack based on That Time I Got Reincarnated as a Slime | TTIGRAAS )
SLM: Shader
A small library with ShadersFx, featuring Impact Frames, Noise Overlays, Color Overlays, Radial Blur [In & Out]
Sophisticated JEI Index
JEI recipe transfer integration for Sophisticated Backpack
Create: Diamond & Factory
This Mod make Diamond from Factory

Lucky Blocks
Lucky Blocks in Vanilla Minecraft! (no resourcepack!)
Epic Knights: Open Helms
Features open helmets versions of the helmets in the EK mod plus its main addon.
Grim Kingdoms: Lost structures & ruins
Adds Castles - Vanilla custom mobs/ hidden items
Elite Holograms
Elite Holograms - floating, fully customizable text for your server or single-player world. Create, edit, and style multi-line holograms, item displays, animated lines, scoreboard leaderboards, and glowing backlights. Forge & NeoForge ready.
SLM: Epic Fight
Add utilities to create passive skills, innate skills, and implement events in Skills for Epic Fight; model, registry & sync utilities.

Mods Optimizer
Automatic and real-time server bundling (one mod pack for client/server) and mod clean up for better performance and less crashes.
COLib
Commonly used Ores
TenSura boss structure
Add a structure for the Tensura boss.
Zombified Player - Kill Your Inner Zombie
Spawns a zombified version of the player after death
Selfexpression: Slim
Create clothes that will suit not only Steve, but now Alex!
More Ores More Gems (Java Edition)
Added 37 new Metal, 46 new Gems and 2 new Stone. Updated monthly. For Forge and NeoForge